Stop-motion mechanism for looms.



Patented Oct., 6, 1908.

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, G. MOGARTNEY. STOP MOTION MEGHANISM FOR L OQMS.

.APPLIUATIONA IILE) JAN. 2251908.

will" use is almost depleted.`

NITED STATES PATENT OFFICE.

` GEORGE neoARTNEY, or,A HARRIsvILLE, RHODE isLAND.

` stroPfMoTroN ivrEoHANrsM FOR LooMs.

n `Specification of Letters Patent.

Patented Oct. 1908.

Application filed J anuaryr 22, 1908. SerialNo. 412,072.

`and useful Improvements in Stop-Motion Mechanism for Looms, of which the following is aspecilication. 1 j

My invention pertains to stop-motion mechanisms for looms; and it has for'its object to provide a simple, reliable and durable mechanism designed more particularly- Vfor use upon woolen or'worsted looms and constructed with a view of automatically stopping the loom when the filling on the bobbin The novelty, utility and practical advantages of the invention will befully understood from; the following' description and claims when the same are read in connection with the drawings, accompanying and forming part of this specification, in Which:

Figure 1 is a Aview partly in section `,and partly in elevation of so `,much of 1a loomas is necessary to illustrate the preferred embodiment of myinvention. Fig. `2 is an elevation taken at a right angle to Fig. 1.

i Similar letters designate corresponding parts in both views of the drawings, referring to which: I

A is a portion of the frame of a loom, and

`B is the lay having the usual shuttle box C and also having upon one of its legsabunter D for an important purpose hereinafter set forth.` W f E is a shipper shaft arranged in the frame l A and adapted to rock. j i

F is a vertically swmgingarm pivotally` 'i connected at c to an-armb 4,0 c

shaft E. j

G is a rock-shaft journaled in a bracket I-I on the frame A and having an inwardlyreaching armyb and also havingan-` outwardly reaching arm'c on which latter is Va pivoted catch d for a purpose :presentlyset i forth, and I isalink pivoted to and 'de ending from the arm bt of the `rock-shaft connected, preferably 4in `an i adjustable manj, ner, with the verticallyswinging 'arm F. f

illustrated in Fig;4 1, relative to the bunter D The scheme of my invention contemplates the maintenance of the arm F in the position f so long asthe lbobbin indicatedlby' J is provided with filling; `and it alsocontemplates the release of the outervarm c ofthe rock-1 shaft G when'the filling on the bobbin` J is of the 'shipper `and.

almost exhausted, whereupon the said outer arm c" of the rock-shaft G will gravitate and vby so doing will raise4 the arm F so that upon `the forward movement of the lay on its next pick, the arm F will lie in the path of and be engaged by the bunter D which latterwill thereby rock the shipper shaft E and stop `though not essentially equipped with the usual hand lever K, Fig. 2, and in the said ligure the usual icker staff L is shown as properly arrange relative to the lay.

For maintaining the arm c of the rockshaft G and the arm Fin the positions illustrated in Fig. 1 so long as the bobbin J is supplied with iilling and for automatically re- 1 easing the said arm c and thereby effecting the upward movement of the arm F when the filling on the bobbin is almost exhausted, I provide the mechanism best shown in Fig. 1. y This mechanism comprises a feeding leverM fulcrumedat an intermediate point ofV itslength between standards e on the bracket H `and having a de ending portion f at its inner end and a latera ly disposed projection-g atits outer end which projection g is positioned back of the before mentioned armfc, a coiled spring h interposed between the outer arm of the lever M and an arm L on one of the standards e and having for its `office to cushion upward movement of the said armV of the lever and assist downward movement thereof, a plunger N movable rectilinearly on thebracket H and having an enlargement 7c at its outer end connected `through a link P with the inner arm of the v feeling lever i M, a tubular plunger R guided on the bracket H and arranged on forward fmovement of the lay to enter an opening Z in -the sideof the-shuttle box C said tubular plungerR'receiving the inner portion of the plunger'N and having longitudinal slots fm in which is movable a cross-pin n on the plunger 'N the oiifice of which cross-pin is to limit the movement of the plunger N with respect to the tubular plunger R, and a coiled spring S surrounding the plunger N and interposed between the enlargement k thereof and the outer end of the tubular lun er R. As belfore stated the opening in t e shuttle box r receives the tubular plunger R on the outward `movement of the lay B, and when there is no shuttle in the box there will be 'no operation of `my novel stop-motion mechanism. When, however, the shuttle indicated by U is in the shuttle box, the; body ofthe said shuttle will,

the loom. The shipper shaft E is preferably on the forward movement of the lay, engage the inner end of the tubular plunger R and thereby move the lungers R and N toward the left in Fig. 1 wliereupon the link connection P will rock the lever M and cause the inner arm thereof to reach into the shuttle and bring up against or feel the surface of the yarn. Incidental to each forward movement of the lay B, the tubular plunger R is caused, as stated, to travel a certain distance, but the feeling lever must move different distances each time its inner arm is presented to the yarn in the shuttle, this because of the gradual discharge of the yarn from the shuttle. To meet this condition, the plunger N and the coiled spring S are provided in combinabodiment of my invention known to me, but l tion with the plunger R, for it will be manifest that in virtue of the said provision, the plunger N is enabled to accommodate itself to the extent of each movement of the feeling lever M. As the yarn on the bobbin in the shuttle is used, each downward movement of the inner arm of the lever M is longer than the preceding downward movement until the yarn on the bobbin is almost depleted, when the inner arm of the lever M will descend sufficiently far to disengage the outer arm of said lever from the arm c of the rock-shaft G, whereupon the said arm c will gravitate to automatically stop the loom in the manner before described. When deemed expedient, aspring W may be employed to assist the said downward movement of the arm c.

Subsequent to the stoppage of the loom, the weaver substitutes a full bobbin for the depleted bobbin in the shuttle, and raises the arm c/ into the position against the projection g of the feeling lever M when the loom may be started by manipulation of the hand lever K. The catch d best shown in Fig. 1 is provided in order to permit of the arm c being expeditiously and easily placed in position for engagement by the projection g of the feeling lever M. As before stated, my improvements are particularly designed for use in woolen or worsted weaving, since in those branches of weaving it is quite laborious to find the pickin the event of the filling running out7 and it frequently happens that a weaver in order to save himself the time and labor for the purpose stated will often remove a bobbin which contains a considerable quantity of yarn and by replacing the said bobbin with a full bobbin will give rise to considerable waste.

In addition to the reliability and efficiency of my novel stop-motion mechanism, it will be readily noted that the mechanism as a whole is strong and durable and therefore well adapted to withstand the rough usage to which such mechanism is ordinarily subjected,

The construction herein illustrated and described constitutes the best practical emit is obvious that in the future practice of the invention such changes in the form, construction and relative arrangement of the parts may be made as fairly fall within the scope of my invention as defined in the claims appended.

Having described my invention, what I claim and desire to secure by Letters-Patent, 1s:

1. In a loom, the combination of a frame, a lay having a shuttle box in a wall of which there is an opening, a shuttle, a filling feeler mounted on the frame and arranged to bring up against the filling in the shuttle, means on the frame connected with and adapted to move the filling feeler and arranged to be moved in one direction by the shuttle on forward movement of the lay, means for moving the first named means in the opposite direction, and stop motion mechanism controlled by the filling feeler and arranged to be put into action when the filling in the shuttle is almost exhausted.

2. In a loom, the combination of a frame, a lay having a shuttle box in a wall of which there is an opening, a shuttle, a filling feeler mounted on the frame and arranged to bring up against the filling in the shuttle, means on the frame yieldingly connected with the filling feeler and arranged on forward movement of the lay to be moved by the shuttle and to move the filling feeler, and stop motion mechanism arranged to be put into action when the filling in the shuttle is almost exhausted.

3. In a loom, the combination of a frame, a lay having a shuttle box in a wall of which there is an opening, a shuttle, a filling-feeler mounted on the frame and arranged to bring up against filling in the shuttle, undue movement of the filling-feeler being adapted to effect the operation of a stopping instrumentality, and means on the frame connected with the filling-feeler and arranged on forward movement of the lay to be moved by the shuttle and to move the filling-feeler; said means being arranged to accommodate itself to differences between the extent to which the lay is moved and the extent to which the filling permits the filling-feeler to move.

4. In a loom, the combination of a frame, a lay having a shuttle box in a wall of which there is an opening, a shuttle, a filling-feeler mounted on the frame and arranged to bring up against filling in the shuttle, undue movement of the filling-feeler being adapted to effect the operation of a stopping instrumentality, a plunger arranged on the frame in position to be engaged by the shuttle on forward movement of the lay, a second plunger arranged on the frame and connected with the filling-feeler, and a spring interposed between the two plungers.

5. In a loom, the combination of a frame,

a lay having a shuttle boX in a wall of which there is an opening, a shuttle, a filling-feeler mounted on the frame and arranged to bring up against filling in the shuttle, undue movement of the filling-feeler being adaptedl to effect the operation of a stopping instrumentality, a tubular plunger arranged on the frame inposition to be engaged by the shuttle on forward movement of the lay, a second plunger telescoped in the tubular plunger and connected with the frlling-feeler, and a coiled spring surrounding the secondk inen-v tioned plunger: and interposed between an abutment thereon and the first mentioned plunger. l

6. In a loom, thecombination of a frame, a lay having a bunter and also having a shuttle box in a wall of which there is an opening, a shuttle, a filling-feeler fulcrumed at an` intermediate point of its length on the frame and arranged to bring up against filling in the shuttle, a shipper shaft arranged in the frame, an arm connected with said shaft and arranged to normally clear the bunter and also arranged when raised to be engaged by said bunter, means for normally maintaining said arm in its depressed position; said means being arranged to raise said arm when the Vmeans is released by a considerable movement of the lling-feeler due to depletion of the filling, and means on the frame connected with the iillin -feeler and arranged to be moved by the siuttle on forward movement of the lay.

7. In a loom, the combination of a frame, a lay, a shuttle, a filling feeler mounted to bring up against filling in the shuttle, undue movement of the filling feeler being adapted to effect the operation of a stopping instrumentality, means connected with and adapted to move the filling feeler and arranged to be moved in one direction by the shuttle incidental to forward movement of the lay, and

i means for-moving the iirst named means in the opposite direction.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.`

GEORGE MGCARTNEY. Witnesses:

EDGAR L. SPAULDING, ISABELLE SMITH. 

